Iranians launch banknote protest to get round censorship

A group of Iranian Twitter users are spreading protest messages by writing slogans on banknotes. "Banknotes are our un-censorable messengers," one user wrote, referring to a rumoured plan to permanently block the popular messaging app Telegram, which is by far the most popular digital communication tool in Iran. Twitter is officially banned in the country, although Iran's Supreme Leader, president and other officials have active accounts. Last week Supreme Leader Ayatollah Ali Khamenei, shut down his Telegram channel, saying that this would help "Safeguard the national interest". Around 40 million Iranians - half the population - use the Telegram app.